Require is not defined in angular

I am using angularjs where I created a js file (loginCtrl.js) and I included a controller. I have defined my connection and db schema in another file (server.js) and I want to include this file in my js.

My loginCtrl.js looks like this:

test.controller('loginCtrl', function($scope, loginService){

   $scope.login = function(user)
   {
       console.log('inside function 1');
       var user = require('./server.js')
      console.log('inside function');
       loginService.login(user);
   }

});

      

        
        
        
      

    

and my server.js files look like this:

var express = require('express');
var mongoose = require('mongoose');

mongoose.connect('mongodb://localhost/userregistration');

var userSchema = {
    username: String,
    firstname:String,
    lastname: String,
    email: String,
    password: String
}

var User = mongoose.model('User', userSchema, 'user');

      

        
        
        
      

    

When I run the code, it gives an error like:

ReferenceError: require is not defined

      

        
        
        
      

    

It prints the above console.log.